.digit-input {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  position: absolute;
  cursor: pointer;
  border-radius: 1rem;
  font-size: 1.5rem;
  background-color: #fff;
  color: #373737;
  font-weight: 900;
  width: 4rem;
  height: 4rem;
  text-align: center;
  border-width: 0;
  margin-top: 1rem;
  left: 50%;
  margin-left: -1.9rem;
  outline: none;
  font-family: Verdana;
  -webkit-transition: all 0.3s ease-in;
  transition: all 0.3s ease-in;
  box-shadow: 0 0 0.2rem 0.2rem #3D576B;
}
.digit-input.left {
  margin-left: -7rem;
}
.digit-input.right {
  margin-left: 3rem;
}
